After you see your labels on the screen you'll need to right click on the move handle on the top left of the labels. Align to center/center. While it's still highlighted click the button to align text left. Finally, adjust the line spacing to 1.15". Every printer is a little different so you might need to do some other adjustments but hopefully this should get you pretty close. Good luck!

I agree with the other comments, the 6737 labels should have stated 'not computer compatible'.

The picture used with the oops this does not print is very insulting. It looks more as if this person is covering her face to hide the snickering regarding the customers mistake in buying this product, if they thought it would be computer compatible.